diff --git a/brozzler/frontier.py b/brozzler/frontier.py
index 396deb2..5b37fd7 100644
--- a/brozzler/frontier.py
+++ b/brozzler/frontier.py
@@ -463,5 +463,6 @@ class RethinkDbFrontier:
         self.logger.trace("running query: %r", query)
         results = query.run()
         for result in results:
+            self.logger.trace("yielding result: %r", result)
             yield brozzler.Page(self.rr, result)